Charter Communications / Charter Cable Said my internet problem was do to my faulty equipment. Adelanto California

Had been a loyal customer to Charter for several years. In Dec. of 2012 my internet was acting up again. I've had problems once in awhile, but nothing that became a real problem. But at the first of the year, 2013, I have had nothing but intermittant internet service. I had called and complained several times. At one point I talked with a person that recommended that they send out a service tech to investigate what the problem was. There was no talk that it would cost me a service charge. The person came out and said it was old coax cables and replaced the one to the modem and scheduled another service call for someone else to come out and replace the cable from the cable box out by the curb to the house. I was still having problems after all that. I got my bill and saw the $35 service charges. I called them back up and I was routed to another person who walked me through another diagnostic check and his result was it had to be the wireless modem because my modem was older than 2 years old. A few days later i went to BestBuy and bought a new wireles modem and still had problems. Then one day everything was working fine. This went on for about 2 months and the problem came back. Cleared up like it had been doing before and was working fine. Then one day it went right back to not working. Constantly get error notices that the computer could not connect with the server and so on. I had to also fight them to get the service charges removed. My argument was that the person came out and not only did he not fix the problem but after he left I noticed that I no longer had internet to my SMART TV. He disconnected something at the cables that come in from the street to the house. I had seen a Charter service person down the street and I went and talked with him and he came over when he finished his work and straightened out my SMART TV issue. Now I'm getting letters from Charter saying that I owe them for the service fees. I've had it with Charter and am now looking to see who I can switch my internet service with. Charter Sucks!!!